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            <h2 class="topic-title">认识月球</h2>
            <p>月球是地球的卫星，是夜空中最明亮的天体之一。它对地球的引力产生了潮汐效应，并且是人类航天探索的目标之一。
            月球表面有许多撞击坑、山脉和月海等地貌特征。</p>
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            <h2 class="topic-title">月球表面特征</h2>
            <p>月球表面主要由月海和高地组成。月海是古老的火山喷发形成的平坦区域，而高地则是由撞击形成的山脉和高原。
            月球表面还有许多撞击坑，其中一些形成了明亮的射纹系统。</p>
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            <h2 class="topic-title">月球探索</h2>
            <p>人类历史上进行了多次月球探测任务，包括美国的阿波罗登月计划和苏联的月球探测器。
            这些任务不仅带回了大量科学数据，还为人类探索外太空提供了宝贵经验。</p>
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